National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Light Snow Fog/Mist

32°F

0°C

Humidity 96%
Wind Speed N 10 mph
Barometer 29.84 in (1010.8 mb)
Dewpoint 31°F (-1°C)
Visibility 4.00 mi
Wind Chill24°F (-4°C)
Last update 21 Feb 7:56 am EST
Extended Forecast for

South Dennis MA

Winter Storm Watch February 22, 01:00pm until February 24, 07:00am
Coastal Flood Watch February 23, 01:00am until February 24, 07:00am
Click here for hazard details and duration
Winter Storm Watch
Coastal Flood Watch

  • Today

    Today: A chance of snow showers, mainly before 11am. Cloudy, with a high near 34. North wind around 8 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 34 °F

    Chance Snow
    Showers then
    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Light north wind.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow after 4pm. Cloudy, with a high near 36. East wind 3 to 8 mph. Chance of precipitation is 20%.

    High: 36 °F

    Cloudy then
    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Snow, mainly after 10pm. Low around 28. Blustery, with a northeast wind 11 to 16 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 28 °F

    Snow Likely
    then Snow and
    Blustery

  • Monday

    Monday: Snow before 9am, then snow, possibly mixed with rain. The snow could be heavy at times. High near 36. Windy, with a northeast wind 28 to 33 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.

    High: 36 °F

    Rain/Snow and
    Windy

  • Monday Night

    Monday Night: Snow, mainly before 11pm. The snow could be heavy at times. Low around 22. Blustery, with a northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Heavy Snow
    and Blustery
    then Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 32. West wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18. West wind around 6 mph.

    Low: 18 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow between 2pm and 3pm, then a chance of rain after 3pm. Mostly cloudy, with a high near 38. West wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 38 °F

    Partly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

Today
A chance of snow showers, mainly before 11am. Cloudy, with a high near 34. North wind around 8 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tonight
Mostly cloudy, with a low around 25. Light north wind.
Sunday
A slight chance of snow after 4pm. Cloudy, with a high near 36. East wind 3 to 8 mph. Chance of precipitation is 20%.
Sunday Night
Snow, mainly after 10pm. Low around 28. Blustery, with a northeast wind 11 to 16 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Monday
Snow before 9am, then snow, possibly mixed with rain. The snow could be heavy at times. High near 36. Windy, with a northeast wind 28 to 33 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.
Monday Night
Snow, mainly before 11pm. The snow could be heavy at times. Low around 22. Blustery, with a northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 32. West wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 18. West wind around 6 mph.
Wednesday
A chance of snow between 2pm and 3pm, then a chance of rain after 3pm. Mostly cloudy, with a high near 38. West wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of rain before 8pm, then a chance of snow between 8pm and 1am, then a chance of rain after 1am. Mostly cloudy, with a low around 28. Southwest wind around 6 mph. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 41. Southwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Southwest wind around 7 mph. Chance of precipitation is 50%.
Friday
A chance of rain and snow. Partly sunny, with a high near 39. West wind 6 to 8 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
5:57 am EST Feb 21, 2026
Forecast Valid:
8am EST Feb 21, 2026-6pm EST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation